• 제목/요약/키워드: larval development

검색결과 555건 처리시간 0.027초

털부채게 (갑각 강: 십각 목: 부채게 과)의 유생 발생 (Complete Larval Development of Gaillardiellus orientalis (Odhner, 1925) (Crustacea : Decapoda: Xanthidae) Reared in the Laboratory)

  • 고현숙
    • Animal Systematics, Evolution and Diversity
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    • 제15권1호
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    • pp.51-65
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    • 1999
  • 털부채게의 제 1 조에아 유생에서 메갈로파 유생기까지, 실험실내 25$^{\circ}C$에서 와전 유생발생시키고 4기의 조에아 유생과 1기의 메갈로파 유생에 대해 상세히 기재하고 도시하였다. 털부채게의 조에아 유생은 제 1 촉각과 미절의 특징에 의해 Actaeinae아과의 다른 조에아 유생들과 구별할 수 있었다.

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새뱅이 ( Caridina denticulata denticulata De Haan ) 의 유생 발생을 통한 수종 살충제 독성에 관한 연구 (A study on toxicity of several pesticides on larval development of shrimp cardina denticulata denticulata de haan)

  • Kim, Chang-Hyun
    • The Korean Journal of Ecology
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    • 제15권3호
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    • pp.257-265
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    • 1992
  • The effects of insecticide dimilin including the technical grade(tg) and wettable power(wp-25), inhibiting the synthesis of chitin in the cuticle of insect larvae, and herbicides alachlor and atrazine on the development of shrimp caridina denticulata denticulata were investigated in various concentrations. This species is abundant in the freshwater such as river and pond. The shrimp larvae were reared at dimilin solutions(tg and wp 2), alachlor solutions, and atrazin solutions. the concentrations of dimiline were 0, 1, 5, 10 and 25 ppb dimilin solutions, and those of alachlor and atrazin were 0, 1, 5, 10 and 25ppm, respectively.mortality was high at 10 ppb when the larvae were exposed to dimilin and at 25ppm in the case of alachlor and atranzine solutions. If lethal concentration is defined as a concentration in which less than 10% of larvae to the post larval stage from hatching it can be concluded that the lethal concentration of dimilin is 5ppb, and that of alachlor and atrazin is 25 ppm.

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Influence of starvation on the larval development of the Black Soldier Fly, Hermetia illucens (Diptera: Stratiomyidae)

  • Park, Kwanho;Lee, Heui-Sam;Goo, Tae-won
    • International Journal of Industrial Entomology and Biomaterials
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    • 제37권2호
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    • pp.100-104
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    • 2018
  • The rearing of black soldier flies in Korea is affected by seasonal factors such as temperature and sun light; for this reason, it requires a great deal of effort to rear and maintain black soldier flies during the winter. In this study, we investigated how starvation affects larval development. After hatching the larvae, they were fed for 5 or 10 d and then starved for a certain period to see how they recovered. The length and width of larvae were estimated to be 18.18 to 21.96 mm, 5.19 to 6.04 mm, respectively. Larvae survivorship to the pupal stage was significantly different between groups and periods of starvation. The groups of fed for 5 d then starved showed a high survival rate until 20 d starvation and then the survival of larvae rapidly decreased. The survival rate of the larvae was abruptly decreased for 20 d starvation in the groups of fed for 10 d and starved, and then gradually decreased until 60 d starvation thereafter. Our research attempted to influence larvae development through starvation and provides basic information on how to culture the black soldier fly effectively and economically throughout the year.